Hinge construction



July 25, J WEDEMANN HINGE CONSTRUCTION 3 Sheets-Shee t 1 Filed Nov. 4, 1950 Jul 25, 1933. J. WIEDEMANN 1,920,044

HINGE CONSTRUCTION Filed Nov. 4, 1930 5 Sheets-Sheet 2 y J. WIEDEMANN HINGE CONSTRUCTION 3 Sheets-Sheet 3 Failed Nov. 4, 1930 WWW Patented July 25,

UNITED STATES PATENT; OFFICE};

JOHN wInnn-ivranu, or CLEVELAND, euro, assrenon'ro' AMERICAN srovr. ooMrAnY,

' or sr, ronrs mssouar, A conronarron or new JERSEY HINGE CONSTRUCTION Application filed November 4, 1930 Serial, No. 493,374.

This invention relates to improvements on hinge constructions, of the type particularly adapted for use on doors mounted on heated objects, such as the ovens of ranges or the like.

i The object of the vision of a hinge of the concealed type which does not have in its makeup any springs with theresult that it is particularly adapted for use on doors which are ing the application of the improved hinge to the oven doors of a range, a portion of thefigure being broken" away and shown in vertical section.

Fig. 2 is a view in end elevation, a portion of the figure being shown in vertical section. Fig. stop for thedoor when in its open position.

Fig. 4C is an enlarged detail view illustrating the several positions of the hinge when the door is in'several positions between its open and closed positions, a portion of the view appearing dotted lines. a

Fig." 5 is astrung-out perspective, view, the parts 'goinginto the make up of' the door and the hinge being shown in unassembled'i'elation, aportion of the View be-' ing shown in section; l

Fig. 6 is a front view ofa modified form of the hinge applied to a door, the door and a portion of the door frame being shown in vertical section.

Referring now to the drawings, A is a rectangular frameof a :U-shape in crossinvention is the. pro! 3 is a detail view illustrating the.

section which forms the marginal edge of the openings into the cooking and broilin'g ovens of a range. A cross member B divides the frame into two parts so as to-dethis two openings which are closed by the 5 doors C- and D, the doors for the baking and broiling ovens respectively.

One leg of the frame Ais designated as 7, and the otherleg designated as 8 is of a configuration to form a seat 9 for the oven and broiler doors.

The cross-member B is approximately U- shaped in cross-sectional configuration, being composed of a vertical wall 10, a narrow top horizontal leg 11 and a wide horizontal 6 leg 12. The vertical wall 10 is longer than the cross-member and has its ends 13 bent to extend in the same direction as the horizontal legs 11 and 12. This cross-bar is secured in place by having its ends 13 welded to the inner sides of'the legs 8 of the frame A, with the result that the crossanember extends rearwardly towards the oven. I

Atv the points where the ends 13 of the cross-bar are weldedthe frame legs 8 are cut out, as indicated at l. This cutout portion permits the free passage ofv the square shaft 15, which is positioned in the U-shaped cross-bar and extends through the squared openings 16 in'the bar ends 13, which openings register with the cut-out portions 14in the frame legs. It is intended that the shaft 15 be fixed against rotation and to this endalock 17 ing 18 which goes over the end of the square shaft 15' at a point exterior of the opening 16 of the cross-bar. This lock 17 is secured to-the' leg 8' oftheframe by a.'suitable bolt which passes through the openings 19 and 20 provided in the frame leg and lock respectively.

The doors C and. D are identical in construction except'as to dimensions. These.

doors comprise a front panel 21 and a lining 22 having inturned marginal edges 23 and 24,-which edges telescope when the two parts ofthe door are assembled. This construction leaves between the main panel and the lining'of the door a space whichis of a depth tion'25 the door panel isprovided with an equal to the width of these marginal edges. Attheir lower corners the door vpanel and the door linings are provided with cut-out portions. The cut-out portion of the door panel is indicated at and of the linings at 26. In itsfaoe adjacent its cut-out poroutward' bulge 27.

The door hinges are designated as an en tirety by the letter E and it is to ,be-undcrstood that there are two of these hinges for each door. These hinges are of a U-shape and'comprise the legs 28 and 29. The end of the leg 28 is thickened to form ahubdike portion 30 having therethrough 'anflopening 31 for'the reception of the shaft'15 The other leg 29 of the hinge is tapered as to thick-. ness clearly indicated in Fig. 5 of the drawings. At the point 32 this' leg of the hinge is of normal thickness, but from this point to the end of the leg the thickness of the material making up the hinge tapers so that at its lowermost end 33 it is quite thin.

Suitably secured upon the top of the shaft 15, at points adjacent its ends arerounded lugs or cams 34E.

- The hinges are made up of material which has resilient qualities and in assembling the structure-the hinges are slid onto the shaft 15 andflthenthe shaft 15'positionedin the U-shaped cross-bar and secured against ro-i ,tation. The ends 33 of the hinge legs 29 are positioned behind the rounded legsor cams 34. By reference to Fig. 4,. it will be seen that positioning the parts in this manner puts the hinge under tension iduetothe fact that. the legs 28 and -29,are held'out of alignment. This distortion of the hinges has a tendency to ,hold them towardslthe oven or stove and tohold the doors inclosed position, because the doors are carried by the. hinges, as-will now be described.

The hinge legs .28 are provided. with threaded openings 35 and 36 and the door linings are provided with bolt openings which register therewith and the linings are fastened to the hinges by suitable bolts which are indicated at 37 in Fig. 1 ofthe drawings.

In fastening the linings to the hinges the. hinges are on the inner side of the "linings andthe hinges are now completely enclosed and positioned within the space between the door-lining and vthe door panel-by placing the panel in telescopic relation with the lining and securingthe marginal edges of the lining and panel together by suitablebolts.

passing through the pluralityof openings 38. With the door liningfandpanel in place it will be seen that the hub-like ends 30 of the hinges extend outwardly through the cut-out portions26- at, the lower corners of,

the. lining and-the cut-out portions 25 at the lower corners of thepanel extend around accommodating space for the hub portions 30 of the'hinges.

As has been pointed out, the hinges are under tension even when the door is" closed so as to hold the doorsv tightly on their seats to prevent. heat escapementfrom the oven. This tension of the hinges also prevents longitudinal lmovement of them upon the shaft 15. v

I The doors, as is usual in. ranges, open downwardly and as illustrated in Figs. 3 and at ofthe drawings, it will be seen that the greater the downward movement of the door the greater the distortion out of alignment of the legs 28 and 29 of the hinges, due to the movement of the ends 33 of the hinge:leg.29 over the rounded lug or camlike member 34. j p i Fig. 4 illustrates in full linethe hinge positionwhen the doors are closed. Reading this figure towards therleft the next dotted position illustrates the position of the hinge when the door is partly open, and when-the parts are in this position the spring tension is sufficiently-strong to cause the hinges to return the door to its closedposition. The remaining dotted position of the parts illustrates the positions of the hinge when the door is completely open. From the intermediate;positio11 to the completely open position the door must be moved against the tensionrof the hinges with the result that the doors cannot drop and, consequently, possible breakageon account ofv the strain created by the dropping of the door islelim- .inated. V i

This hinge construction is such that the door willremain in any set position between the intermediate and fully open positions. Oncethe tension upon the lower ends of the hinge legs 29 is at a point back of the center of the shaft 15, the door will automatically assume a closed, position. When the tension upon the ends of the hinge legs 29 is in front of the center. of the shaft 15,

the door will remainin any set position.

From the foregoing it will be seen that the hinge is. completely concealed in'the space between the door lining and doorpanel withthe' exception of the'lhub-like portion 30. It will be further seen that the construction isrextrem'ely simple and. thatthe door front panel can be removed without removing the door. The contruction further elimides'irable as it has been found that ordinary springs in hinge constructions for doors .utilized'on heated objects or members will not last as the springs rapidly lose their tension when operated in heated zones. The present hinge utilizes tension,.but the hingesv are sufficientlyheavy to withstand any heat which may get tothem in 1- their protected position. I i i At its bottom the frame A is provided nates 'alllordinary, springs which ishighly with a cross-bar similar to the cross-bar B and the hinge and door construction of the door D is exactly similar to that described for the upper'door C of the oven.

In Fig. 6, a slightly modified form of the invention appears wherein it will be seen that any possible longitudinal movement of the hinges is guarded against. Here the rounded lugs or cam-like members, which are designated at 40, are provided with upstanding ears 41, and the ends 83 of the hinge legs 29 travel and are guided between these lugs. To further guard against longitudinal movement of the hinges the ends of the hinged legs 29 are forked and carry lugs 42 which travel the outer faces of the camears 41. Thus the cam ears 41 travel in the spaces 43 at each side of the leg end 33 between the leg end and the leg lugs 42.

In the range construction the floors of the oven are in the same horizontal plane with the top legs 11 of the cross-bars B, with the result that when the doors are open, the door linings are in the same plane with the oven bottoms.

To assure this alignment and to provide a limited movement of the doors, the construction is such that when the doors are completely open the faces 44 (see Fig. 3) abut the ends L5 of the door seat 9, at the point where the door seat and the leg 8 of the frame A are cut-out at 14.

Viewing the stove from the front, it will be seen that no part of the hinge or doorsupporting'means is visible to the eye; The square shaft which is in reality the pintle ofthe door is concealedbetween the door front panel and lining as is also the hinge itself. By attaching the door lining to the hinge leg carrying the hub the lining leg is free to be sprung by the shaft cam. When the doors are closed, they are contained comside faces of the door linings are in contact with the door seats and the door front panels are flush with the faces of the frame A, all of which lends a pleasing appearance to the range construction.

Having thus described my invention what I claim and desire to secure by Letters Patent is:

1. An improved construction, comprising a hinge member made of a piece of mate-- rial capable of being flexed and formed into two legs in separated relation, said hinge legs movably mounted, one leg supporting a door and the other leg free to be flexed, a cam arranged in the path of travel of the free leg, said cam normally causing a flexing of the 1 free leg and further causing a continuing and increased flexing of the free leg upon an opening movement of the door,

means on said cam for preventing longitudinal movement of the free leg in respect to the cam, and means on the free leg co-acting with the cam for further preventing longitudinal movement of the member in respect to the cam. j i

2. An improved construction, comprising a hinge including a continuous piece of material capable of being flexed and formed into two leg portions in separated relation, said legs movably mounted and means for moving them, one leg supporting a door and the other leg free to be flexed, the free leg in engagement with a rounded cam causing aiflexing of this hingle leg, upon a movement of the door said free hinge leg travelling over said cam, ears carried by said cam forming a guide for the free leg over the cam, and ears carried by the free leg and positioned beyond the ends of the cam for preventing longitudinal movement of the hinge legs in respect to the cam. v

JOHN WIEDEMANN. 

